<section class="section">
  <h2>Video</h2>
  <p>Video credit: "Hearbeat" by conolan on <a href="https://pixabay.com/videos/heart-heartbeat-slow-heart-8449/" rel="nofollow noreferrer">Pixabay</a></p>
  <video width="640" height="360" src="./static/Heart%20-%208449.mp4" controls></video>
  <details class="demo">
    <summary>View code</summary>
    <pre><code>&lt;video width="640" height="360" src="../static/Heart%20-%208449.mp4"&gt;&lt;/video&gt;</code></pre>
  </details>
</section>